body {
  background: darkgray;
}
.jumbotron {
  background: url(../images/img/bg.jpg) no-repeat;
  background-size: 100% 100%;
  height: 192px;
  margin-top: 50px;
}
.jumbotron .zi p {
  color: lightgray;
}
.li {
  height: 50px;
  line-height: 50px;
  border-bottom: 1px solid lightgray;
}
.zuo {
  margin-right: 20px;
}
.you {
  margin-left: 0px;
}
.you h2 {
  padding: 15px 0;
}
.you p {
  color: #666666;
}
.content1 p {
  font-size: 16px;
}
.content1 h2 {
  color: black;
}
